Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.structural2 / src / org / simantics / structural2 / scl / FindPossibleComponentTypeRequest.java

diff --git a/bundles/org.simantics.structural2/src/org/simantics/structural2/scl/FindPossibleComponentTypeRequest.java b/bundles/org.simantics.structural2/src/org/simantics/structural2/scl/FindPossibleComponentTypeRequest.java
new file mode 100644 (file)
index 0000000..9457632
--- /dev/null
+++ b/bundles/org.simantics.structural2/src/org/simantics/structural2/scl/FindPossibleComponentTypeRequest.java
@@ -0,0 +1,31 @@
+package org.simantics.structural2.scl;\r
+\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.common.request.ResourceRead;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.layer0.Layer0;\r
+import org.simantics.structural.stubs.StructuralResource2;\r
+\r
+public class FindPossibleComponentTypeRequest extends ResourceRead<Resource> {\r
+\r
+       public FindPossibleComponentTypeRequest(Resource resource) {\r
+               super(resource);\r
+       }\r
+\r
+       @Override\r
+       public Resource perform(ReadGraph graph) throws DatabaseException {             \r
+               StructuralResource2 STR = StructuralResource2.getInstance(graph);               \r
+               Resource type = graph.getPossibleObject(resource, STR.Defines);\r
+               if(type != null)\r
+                       return type;            \r
+\r
+               Layer0 L0 = Layer0.getInstance(graph);\r
+               Resource parent = graph.getPossibleObject(resource, L0.PartOf);\r
+               if(parent != null && graph.isInstanceOf(parent, STR.Composite))\r
+                       return graph.syncRequest(new FindPossibleComponentTypeRequest(parent));\r
+               else\r
+                       return null;\r
+       }\r
+\r
+}\r